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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 67. B-Tree Indexes</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="custom-rmgr.html" title="Chapter 66. Custom WAL Resource Managers" /><link rel="next" href="btree-intro.html" title="67.1. Introduction" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">Chapter 67. B-Tree Indexes</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="custom-rmgr.html" title="Chapter 66. Custom WAL Resource Managers">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="internals.html" title="Part VII. Internals">Up</a></td><th width="60%" align="center">Part VII. Internals</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 16.2 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="btree-intro.html" title="67.1. Introduction">Next</a></td></tr></table><hr /></div><div class="chapter" id="BTREE"><div class="titlepage"><div><div><h2 class="title">Chapter 67. B-Tree Indexes</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="sect1"><a href="btree-intro.html">67.1. Introduction</a></span></dt><dt><span class="sect1"><a href="btree-behavior.html">67.2. Behavior of B-Tree Operator Classes</a></span></dt><dt><span class="sect1"><a href="btree-support-funcs.html">67.3. B-Tree Support Functions</a></span></dt><dt><span class="sect1"><a href="btree-implementation.html">67.4. Implementation</a></span></dt><dd><dl><dt><span class="sect2"><a href="btree-implementation.html#BTREE-STRUCTURE">67.4.1. B-Tree Structure</a></span></dt><dt><span class="sect2"><a href="btree-implementation.html#BTREE-DELETION">67.4.2. Bottom-up Index Deletion</a></span></dt><dt><span class="sect2"><a href="btree-implementation.html#BTREE-DEDUPLICATION">67.4.3. Deduplication</a></span></dt></dl></dd></dl></div><a id="id-1.10.18.2" class="indexterm"></a></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="custom-rmgr.html" title="Chapter 66. Custom WAL Resource Managers">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="internals.html" title="Part VII. Internals">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="btree-intro.html" title="67.1. Introduction">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 66. Custom WAL Resource Managers </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 16.2 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 67.1. Introduction</td></tr></table></div></body></html>